Mintage:
Circulation strikes: 65,879,366
Proofs: 2,360,000 (Special Mint Set)

Designer: Obverse by Gilroy Roberts; reverse by Frank Gasparro

Diameter: ±31 millimeters

Metal Content:
Outer layers - ±80% Silver, ±20% Copper
Center - ±79% Copper, ±21% Silver

Weight: ±178 grains (±11.5 grams)

Edge: Reeded

Mintmark: None (for Philadelphia, PA)
left of the stem of the olive branch on the reverse

Image courtesy of 

Varieties:

Notes:
The finest Uncirculated examples graded by PCGS are 9 MS-67's.

The finest Uncirculated SMS examples graded by PCGS are 17 MS-68's.

The finest Uncirculated Cameo SMS example graded by PCGS is a single MS-68.

The finest Uncirculated Deep Cameo SMS example graded by PCGS are 8 MS-67's. 

Sources and/or recommended reading:
"The PCGS Population Report, April 2003" by The Professional Coin Grading Service